Conference Agenda

Non-atomizing misting systems have typically been employed to alleviate the problem of thermal heat stress among occupants and have been shown to be effective especially in temperate countries. However, its impact in tropical countries is not widely studied and it is the same for the impact of the water temperature on reducing air and skin temperature. Using CFD simulation models, this paper seeks to address these gaps. A Langrangian-Eulerian approach is adopted using the Steady K-Epsilon turbulence model and Discrete Phase Model in Ansys Fluent software. Inputs for misting spray and modelling human skin are adopted from other published papers, and Grid Independence studies are also conducted. The results show that Misting sprays can cool the air temperature by up to 4.5oC, based on a hot afternoon condition in Singapore and there is an almost linear relationship between water temperature and cooling effect. At 3m downstream from nozzle, a 45oC water temperature leads to neither decrease nor increase in air temperature. Skin temperatures can also be reduced by a maximum of 3oC. Due to thermal properties of water, even 95oC water temperature only increases air temperature by less than 4oC.

3DFOGTECH© is a water enhancement technology applied in fog collection. This study is focus on geo-climatic data collection in selected fog sites, including design and structural test. 3DFOGTECH© is a portable, lightweight and modular polyhedral space-frame with light-coloured and water-repellent textile screens that collects condensed water drops in 360° from fog promoted by physical surface effects such as cooling, coalescence and condensation following the multi-directionality of winds, without any active energy demand. It offers autonomous water management in water-stressed areas with frequent dense fog events. Previous experiments made by author and collaborators (2010-16) were focused in obtaining efficient forms and designs through lighter space-frames and affordable hydrophobic meshes to secure clean water for drinking and irrigation. 3DFOGTECH© can harvest at least six times more water than planar fog collectors. Tubular frames are made with aluminium, which is a light, strong, durable and recycling material, whilst modular meshes are made with textiles treated with water-repellent coating solutions, light coloured surfaces and natural, synthetic or remanufactured polymers. Advanced design, connectors and structural prototypes are tested digitally and physically. 3DFOGTECH© is an applied research project co-financed by EU H2020 Marie Skłodowska-Curie and ACCIO TecnioSpring Plus programmes.

The East Ukraine military conflict has caused a large-scale devastation and displacement of millions of people. Most of the families are forced to live in the conditions unfit for human habitation. This paper is based on a research aimed at defining a settlement strategy for the Ukrainian internally displaced persons (IDPs). The study assumed that the displaced families can be settled in the existing rural houses that have been abandoned due to demographical process. The refurbishment of these houses has the potential to satisfy the required needs. Due to the local cold climate, energy efficiency retrofitting solutions, in particular for heat conservation, were studied and assessed with computational simulation.

This work deals with the particulars of urban design in hot climate cities, where direct solar radiation leads to high temperature. This paper considers old part of Jeddah city as a compact neighborhood case study. We address the correlation between Sky View Factor (SVF) and direct solar radiation by orientation, value and time interval in the old Jeddah area, with the aim of adjusting future morphology in order to enhance outdoor thermal conditions. Results show that the sky view factor (SVF) could be an indicator of solar access in an urban morphology. The objective of this study is to identify and discuss the relationship between canyon geometry (size, orientation) and SVF to see how it impacts solar radiation within the urban street.